Shearing-machine.



J. R. GEORGE. SHEARING MACHINE.

APPLICATION FILED APR. 29, I909.

Patented Jan. 7, 19 13.

fnvenfor fir ELfiGorgt-B ffzar n ey UNITED STATES PATENT OFFICE.

JEROME R. GEORGE, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO lVIORGAN'CON- STRUCTION COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

Sl-IE ARING-MACHINE.

Application filed April 29,

To all whom it may concern l Be it known that I, JEROME R. Gnonon, acitizen of the Tfnited States, residing at Yorcester, in the county ofWorcester and Commonwealth of Massachusetts, have invented a new anduseful Improvement in Shearing-Machines, of which the following is aspecification,accompanied by drawings forming a part of tie same, inwhich- Figure 1 represents in plan view. a portion of a rolling millembodying my present invention. is an end view of the shear and thefirst pair of rolls in the mill. Fig. 3 is a detached view in section ofthe spring actuated pin Similar reference figures refer to similar partsin the different views.

My present invention relates to the combination with the rolls of arolling mill, of a shearing apparatus, designed to sever a bar of metalduring its movement through the rolls of the mill, and ithas for itsobject to maintain a fixed relation of speed between the cutting bladesof the shear and the peripheries of the rolls. This object isaccomplished by the construction and arrangement. of parts ashereinafter described, the novel features being pointed out in theannexed claims.

Referring to the accompanying drawings 1 denotes a furnace from whichheated ingots or bars are fed to the pairs of rolls 2 i of a rollingmill, supported in housings 3 and arranged for the consecutive reductionof a rod passing between them, in the direction of the arrow 4:. Eachpair of rolls are driven from roll shafts 5, 6 and 7, driven from acommon driving shaft 8 by means of bevel gear connections 9,10 and 11arranged to give an increased peripheral speed to each successive pairof rolls, in order to provide for the elongation of the metal as itpasses between them.

'Locatedin any desired position with relation to the rolls of the mill,in the present instance between the first pair of rolls and the furnace,I place a shear 12 of any known type adapted to sever the heated ingotor bar during the period of its longitudinal movement between the rollsof the mill.

Specification of Letters Patent.

Patented Jan. 7, 1913-.- 1909; Serial No. 492,866.

the heated ingot or bar, represented by the broken lines 15, Fig. 2.

g In order to cut the ingot or bar, the cut-- ting blades 13 and 14 arecaused to approach. ,and in order to allow this cutting tobe donewithout interrupting the move ment of the bar, the'framework 1 1 of theshear is arranged capable of a slight swingmg movement upon the shaft16as an axis to allow the shear to follow the ingot until the cutting isaccomplished.

The advancing endof the ingot or bar is entered between the first pairof rolls and during the longitudinal movement of the ingot as it passesbetween the rolls, it is sometimes desirable to sever the heated ingotor bar, asfor example, to cut off the final or crop endwhen the same isimperfect, or to sever the ingot or bar when its movement between therolls is interrupted, in

order to prevent the formation of what is known as a cobble Vhenever thenecessity for severing the bar arises, the shear is put into operationby the attendant and the severing of the ingot or bar is accomplished asabove described without interfering with its longitudinal movementthrough the rolls, and without requiring any cessation or slackening ofthe speed of the rolls.

The above "result of cutting the ingot is accomplished by means of mypresent invention by so connecting the driving mechanism 'oi the pair ofrolls in front. of the clear and the driving mechanism of the shear,that a predetermined correspondence of movement is maintained, with afixed relative speed between the blades of the shear in their cuttingaction and the peripheral speed of that pair of rolls by which the ingotor bar isbeing moved between the blades of the shear. g

In the present embodiment of my invention I operate the movable bladesof the shear by means of a rotatable shaft 16 carrying a spur gear 17turning loosely on the shaft 16 and inmesh with a spur gear 18 attachedto the roll shaft 5 of the pair of rolls next the shear. The loose gear17 is provided with a clutching member 19 adapted to'be engaged by aslid-able clutching member 20, formed on a collar 21 having a. splineconnection with the shaft 16, and capable of a sliding movement thereon.Attached to the shaft 16 is a collar 22 and interposed between the fixedcollar 22 and the sliding collar 21 is a spiral spring 23, with itstension exerted to hold the clutch members 19 and 20in engagement.collar 21 is provided with a-curved cam groove 2i adapted to receive theend-f a pin 25, which is capable of sliding in a fixed framework '26.

The outer end of the sliding pin 25-is provided with a handle 27 bywhich the pin may be withdrawn from the cam slot- 24-, and inclosedwithin a chamber of'the framework 26 is a spiral spring 28 acting tomove the sliding pin 25 into the cam groove 24.

The function of the sliding pin 25 when its.

end. is inserted in the cam groove 21is to hold the clutching member 20.out of engagement with the clutching member 19, thereby disconnectingthe gear 17 and' shaft 16 and allowing the latter to remain at rest.lVhenever it is desired to set the shear in operation, the attendantwithdraws the pin '25 from the cam groove 21, allowing the spiral spring23 to immediately carry the clutch 20 into engagement with the clutch19, and cause the rotation of the gear 17 to be imparted to the shaft16. The immediate release of the sliding pin 25 will cause it to restupon the periphery of the collar,

21 until a section of the cam groove passes beneath the pin. \Vhen thisoccurs the pin is forced by the spring 28 into the cam I groove and therotation of'the cam groove past the end of thegpin slides the collar onthe shaft 16 disengages the clutch 20 from the cli itch 19, allowing'the shaft 16 to remain at rest. During the operation of the shear thecutting speed of the movable shear blade will bear a fixed relation tothe peripheral speed of the rolls by means of the operative connectionof both the shear and The sliding the rolls with a common driving shaftor,

source of power.

I claim,

1, The combination of a pa'ir of rolls and a shear, said rolls andsaidshear havinga common operative conneotioncwhcreby their speeds shallbear a fixed rel'aii'oniimeans for 3. In a rolling mill,.a pair ofrolls, a shaft connecting said pair of rolls with the driving power, .ashear, a rotatable shaftoperatively connected with said shear, aconnection' between said roll and said shear, operating shaftscomprising a pair of intermeshed ars. and a c-lutchin mechanism wherebysaid shafts may be operatively connected at will, said clutchingmechanism arranged to disconnect said shafts automatically after asinglecutting operationof said shear.

Dated this twenty-seventh day of April, 1909.

JEROME R. GEORGE.

\Vitnesses Pizxnrorn Coa'mrnmcn, NELLIE VVHALEX.

